Bad HTTP “Content-Type” header from the Dropbox API

Question

When I try a simple curl request to the Dropbox API (v2), I get this error:

Error in call to API function "users/get_current_account": Bad HTTP "Content-Type" header: "application/x-www-form-urlencoded". Expecting one of "application/json", "application/json; charset=utf-8", "text/plain; charset=dropbox-cors-hack".

The PHP code:

$ch = curl_init();
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch, CURLOPT_POST, true);       
curl_setopt($ch, CURLOPT_URL, "https://api.dropboxapi.com/2/users/get_current_account" );
curl_setopt($ch, CURLOPT_HTTPHEADER, array("Authorization: Bearer " . $accessToken) );
echo curl_exec($ch);
curl_close($ch);     

Answer 1

Using the CURLOPT_POST option specifies a content type (to application/x-www-form-urlencoded , based on the documentation ). It's possible instead to make it a POST request using the CURLOPT_CUSTOMREQUEST option.

$ch = curl_init();
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch, CURLOPT_URL, "https://api.dropboxapi.com/2/users/get_current_account" );
curl_setopt($ch, CURLOPT_HTTPHEADER, array("Authorization: Bearer " . $accessToken) );
echo curl_exec($ch);
curl_close($ch);